multimodal commuter
Join Date: Nov 2006
Location: NJ, NYC, LI
Posts: 19,808
Bikes: 1940s Fothergill, 1959 Allegro Special, 1963? Claud Butler Olympic Sprint, Lambert 'Clubman', 1974 Fuji "the Ace", 1976 Holdsworth 650b conversion rando bike, 1983 Trek 720 tourer, 1984 Counterpoint Opus II, 1993 Basso Gap, 2010 Downtube 8h, and...
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Search for "cottered" on ebay and you'll find a fair selection. Some of the Chinese ones are rather attractive... not really classic, but not terrible.
Sounds like you can't use the standard Raleigh type crank, since it has a 46 or 48 T chainring. At any rate, the arms on those are 6 1/5" (165 mm). That said... can you go as small as 36T? Pyramid sells a cottered crank with 6" arms (152 mm) and a 36T ring. It's called a "tricycle crank" for reasons I don't know. At any rate, it's a perfectly ordinary cottered bike crank. And it costs about ten bucks. Not very pretty in my opinion.